BMW 220i F22 Headlight Module Water Damage: Coding and Calibration Case
A BMW 220i F22 arrived with a headlight warning, failed daytime running light, and inoperative adaptive function. Inspection found water damage and severe corrosion inside the lower headlight control module; the lamp sealing defect was addressed before module replacement. Coding, adaptive-headlight initialization, a complete lamp function check, warning check, and road test—not hardware installation alone—closed the repair.